lucretia96 said:
To me Iron Maiden, Savatage, Nightwish are all basically power metal. Savatage is not a prog band. As far as the root of Power Metal I think it is Dio, but somehow none of the albums with him were mentioned.
Really? How do you define genres? I'm not trying to be ugly, but the terms Power and Prog get used pretty loosely around here. And while a lot of bands use elements from many genres, the genres themselves are pretty clearly defined.
NWOBHM: (or New Wave Of British Heavy Metal) England had barely got out of the first Punk rock wave in the 70's when they were corrupted by the latest american craze. One of their own, Ozzy Osbourne, was becoming a household name in the US and his music was new and refreshing. On a darker side, Heavy Metal didn't promise much as far as political statements went, since it retained much aspects from hard rock. Heavy Metal was also synonym of the super-stoned/drunk rock star, living in debauchery. British heavy metal artists started to go into more mythologic and ancient-world themes in their lyrics, greco-roman themes and more classical guitar playing.
Iron Maiden popularised the New Wave Of British Heavy Metal with their different approach to guitar playing. Oldschool heavy metal is known for it's AC/DC-style riff-oriented powerchords, while NWOBHM has more intricate and complicated guitars, with more than one guitar player in a band. Iron maiden is known for their overlapped classical leads over rock bass/rythm/drum base. The Bruce Dickinson "air-raid siren" high vocals soon became notorious, and a source of inspiration for the following wave, Power-Metal.
Some NWOBHM bands:
Iron Maiden, Judas Priest, Savage, Voyager UK, Def Leppard, Saxon, Venom(pre-blackmetal).
Power: The style of playing is characterised by very high lead melodies (like in power ballads, hence the term "power") over "long notes" rhythm and that constant
"gallopping" double bass drum beat. Power Metal is fast and intricate, played in a very technical manner. What gave it the name "power" is the style of vocals, taken from bands like Iron Maiden and advanced into a more powerballad "high-voice all the time" style.
Progressive: A form of metal that emphasises melody and compositional sophistication. It often employs time/key changes and radically varying tempos, with heavy emphasis on extended instrumental segments. Progressive Metal is mostly defined by the complexity of its compositions. In most cases songs are very detailed and intricate, with a lot of breaks, time changes, extensive solo passages and complicated structures.
Gothic: Gothic Metal is the cross between gothic music (EBM/darkwave/Industrial/Doom Rock/gothic Rock, etc) and Metal. Gothic will often have an opposition of female versus male vocals. The female vocals will often be clean and the male vocals more metal-ish, taken from 90's thrash/death/black metal. Gothic and Doom Metal derived from early Black Sabbath's Doom sound, but Gothic Metal metamorphosed from merging with Gothic Rock. Gothic Metal is very athmospheric, very contrasted, and has a great sense of dark aesthetics, which explains the common cross with Black Metal.
For more in depth info I recommend
Wikipedia, the free online encyclopedia. You can search all of these genres there. And just for kicks search Savatage.